Definition of dead letter box in English:

dead letter box

Line breaks: dead let¦ter box

Entry from British & World English dictionary

noun

A place where messages can be left and collected without the sender and recipient meeting.

Definition of dead letter box in:

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Word of the day vituperate
Pronunciation: vɪˈtjuːpəreɪt
verb
blame or insult (someone) in strong language...